CN213162986U - High-precision device for controlling molten aluminum liquid level in cast-rolling front box - Google Patents
High-precision device for controlling molten aluminum liquid level in cast-rolling front box Download PDFInfo
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- CN213162986U CN213162986U CN202021876136.6U CN202021876136U CN213162986U CN 213162986 U CN213162986 U CN 213162986U CN 202021876136 U CN202021876136 U CN 202021876136U CN 213162986 U CN213162986 U CN 213162986U
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Abstract
The utility model relates to an aluminum alloy cast rolling technical field discloses a high accuracy control cast rolling front box aluminium liquid level device. The device comprises a laser distance measuring sensor, a float, a PLC control system, a stepping motor and an electric cylinder three-link rod, wherein the laser distance measuring sensor, the PLC control system, the stepping motor and the electric cylinder three-link rod are sequentially connected, the float is placed on the surface of aluminum liquid in a front box, after the electric cylinder three-link rod adjusts the liquid level of the aluminum liquid, the laser distance measuring sensor detects the up-and-down floating displacement of the float on the surface of the aluminum liquid and converts the up-and-down floating displacement into an electric signal to be transmitted to the PLC control system, and the PLC control system converts the electric signal into the liquid level; the electric cylinder three-link rod comprises an electric cylinder, three-link rods and a launder plugboard, wherein the middle part of the launder plugboard is provided with a graphite plug. The device can automatically detect and identify the liquid level of the front box, automatically intervene and adjust the liquid level of the front box, improve the quality of cast-rolled strip blanks and improve the production efficiency.
Description
Technical Field
The utility model relates to an aluminum alloy cast rolling technical field, concretely relates to high accuracy control cast rolling front box aluminium liquid level device.
Background
The casting and rolling technology of aluminum and aluminum alloy is widely applied, and the stability of the aluminum liquid level of a casting front box directly influences the quality of a cast and rolled strip blank and the continuity of production in the casting and rolling process of the aluminum and the aluminum alloy. The existing liquid level control technology is four-link control at present, a flow control float floats on the liquid level of a front box, the flow control float is connected with a float screw rod, the float screw rod is connected with a linkage rod in a four-link moving part, the vertical distance of the float is adjusted through an upper nut and a lower nut to control the liquid level of the front box, manual adjustment is needed according to the liquid level before each use, quantitative management cannot be realized, mechanical blockage and blockage often occur in mechanical parts, blockage and blockage are not found in time during inspection, and the defect of quality of cast rolling strip blank products caused by liquid level fluctuation (too high liquid level/too low liquid level) is caused, or the production is stopped and stopped. If the detection and identification of the liquid level of the automatic front box of the equipment are realized and the automatic intervention is carried out to adjust the liquid level of the front box, the quality of cast-rolling strip blanks and the production efficiency can be improved, thereby effectively improving the cast-rolling production process technology.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the casting and rolling front box aluminium liquid level height that prior art exists and needing artifical adjustment, can not quantify the management, mechanical part often appears the card and hinders, the card is dunked, patrol and examine simultaneously and can not in time discover, produce the problem of casting and rolling belted product quality defect, a high accuracy control casting and rolling front box aluminium liquid level device is provided, the device can automated inspection discernment front box liquid level, and go forward the height of case liquid level automatically to intervene the regulation front box, improve the casting and rolling belted slab quality, and the production efficiency is improved, thereby effectively improve the casting and rolling production technology.
In order to achieve the purpose, the utility model provides a high accuracy control rolls front box aluminium liquid level device, the device includes laser rangefinder sensor, cursory, PLC control system, step motor and electronic jar three link rod, laser rangefinder sensor, PLC control system, step motor and electronic jar three link rod connect gradually, the cursory is placed on front box aluminium liquid surface, after electronic jar three link rod adjustment aluminium liquid level, laser rangefinder sensor detects the displacement of floating from top to bottom on aluminium liquid surface of cursory and changes the displacement of floating from top to bottom into the signal of telecommunication transmission to PLC control system, PLC control system changes the signal of telecommunication into liquid level height through the calculation; the electric cylinder three-link rod comprises an electric cylinder, three-link rods and a launder plugboard, wherein the middle part of the launder plugboard is provided with a graphite plug.
Preferably, the float is a spherical float or a vertical float.
Preferably, the float is a nano-float.
Preferably, the PLC control system comprises a memory, and the memory records and archives the liquid level data.
Preferably, the stepping motor is a permanent magnet or hybrid stepping motor.
Preferably, the electric cylinder is provided with a high-precision roll coating screw rod and a servo motor.
Preferably, the servo motor is an alternating current servo motor.
Preferably, the triple link is a stainless steel triple link.
Preferably, the three connecting rods are provided with bearings to prevent the three connecting rods from being blocked when rotating.
Preferably, the side of the three-link is provided with a spring and a positioning ring for fixing the bearing.
The device can automatically detect and identify the liquid level of the front box, automatically intervene and adjust the liquid level of the front box, improve the quality of cast-rolling strip blanks, improve the production efficiency and effectively improve the cast-rolling production process technology.
Drawings
FIG. 1 and FIG. 2 are schematic diagrams of the flow of the device for controlling the molten aluminum level in the casting and rolling front box with high precision.
Description of the reference numerals
1, a laser ranging sensor; 2, floating; 3, a PLC control system; 4, a stepping motor; 5 electric cylinder three-link rod.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
The utility model discloses a high accuracy control cast-rolling front box aluminium liquid level device, as shown in figure 1 and figure 2, the device includes laser range sensor 1, cursory 2, PLC control system 3, step motor 4 and electronic jar three link rod 5, laser range sensor 1 PLC control system 3 step motor 4 with electronic jar three link rod 5 connects gradually, cursory 2 is placed in front box aluminium liquid surface, after electronic jar three link rod 5 adjusts aluminium liquid level, laser range sensor 1 detects cursory 2 the displacement of floating from top to bottom on aluminium liquid surface and changes the displacement of floating from top to bottom into the electric signal transmission to PLC control system 3, PLC control system 3 converts the electric signal into liquid level height through calculating; the electric cylinder three-link rod 5 comprises an electric cylinder, three link rods and a launder plugboard, wherein the middle part of the launder plugboard is provided with a graphite plug.
In the device of the utility model, the shape and the material of the buoy can be the conventional selection in this field, and under the preferred condition, the buoy is spherical buoy or vertical float, the buoy is the nanometer floats.
In the device, PLC control system 3 includes the memory, after PLC control system 3 calculated liquid level, the memory carries out the record with liquid level height data and archives.
In the device of the present invention, the stepping motor 4 can be a conventional choice in the field, in a specific embodiment, the stepping motor 4 can be a permanent magnet type or a hybrid stepping motor, and preferably, the stepping motor 4 is a hybrid stepping motor.
In the device, be provided with high accuracy roller coating lead screw and servo motor on the electronic jar, can realize controlling the action of three connecting rods.
In particular embodiments, the servo motor may be a conventional choice in the art, and in preferred embodiments, the servo motor is an ac servo motor.
In the device of the present invention, the three link rods are stainless steel three link rods, and the thermal deformation degree of the three link rods can be reduced by using the stainless steel three link rods.
In the device of the utility model, the three connecting rods are provided with bearings to prevent the three connecting rods from being blocked when rotating; and a spring and a positioning ring are arranged on the side surface of the three connecting rods and used for fixing the bearing.
The device operation process as follows:
(1) the laser ranging sensor 1 detects the up-down floating displacement of the float 2 on the surface of the aluminum liquid, converts the up-down floating displacement into an electric signal and transmits the electric signal to the PLC control system 3 to calculate the liquid level height, and simultaneously connects the liquid level height data to the PLC control system 3 for recording and archiving;
(2) the PLC control system 3 converts the calculated liquid level height into a control instruction, controls the stepping motor 4, adjusts the speed by the stepping motor 4, controls the electric cylinder to be accurately positioned, further controls the three-connecting-rod action, causes graphite blockage to perform pendulum type front and back displacement action, and adjusts the flow of the aluminum liquid;
(3) the laser ranging sensor 1 detects the up-down floating displacement of the buoy 2 on the surface of the aluminum liquid again, and the circulation operation is carried out in such a way, so that the automatic control circulation of the liquid level height is realized.
The method can realize the automatic control circulation, the uninterrupted detection and the uninterrupted control of the liquid level height and realize the automatic control of the liquid level of the casting and rolling front box.
In a specific embodiment, the detection precision of the laser ranging sensor 1 is 0.01 °; the liquid level height is calculated according to the distance between the laser ranging sensor 1 and the float 2, and the calculation formula is as follows: the liquid level height (mm) is distance (mm) ÷ tan angle.
In a specific embodiment, the electric cylinder controls the action of the three connecting rods through a high-precision roll coating screw rod and a servo motor. The gap between the graphite plug and the slot eye of the launder is controlled by the action of the triple link, and the flow control is realized. By controlling the liquid level flow, the liquid level is controlled to be constant, the pressure impact of liquid level fluctuation on a casting nozzle is reduced, the broken oxide film brought out is reduced, the width stability of a cast-rolled plate is ensured, the side surface of the whole roll is neat, and the trimming amount is reduced.
In a specific embodiment, after the liquid level height is calculated, the liquid level height is compared with a set value of the liquid level height of the front box, the action of the electric cylinder is controlled, the control of +/-2 mm of the liquid level is realized, and the specific control process is as follows: the liquid level height value does not move within +/-0.3 mm; the liquid level difference value is within +/-0.3 mm and the low-speed action is carried out; the liquid level difference value acts at a high speed within +/-1.5 mm; the electric cylinder is rotated reversely (the action speed can adjust the pulse number) when the liquid level difference is more than plus 0.3mm, and the electric cylinder is rotated forwardly when the liquid level difference is more than minus 1.5 mm. The electric cylinder pulse can be modified on the operation screen to adjust the liquid level control stability.
In the specific implementation mode, in order to prevent the collected data from interfering to cause the misoperation of the electric cylinder, the interval between the forward rotation and the reverse rotation of the electric cylinder is 500-minus 600 milliseconds, 10-15 groups of collected data are added and then divided by 10-15, the average is calculated, and the electric cylinder is controlled by the average.
The device in, have certain requirement to three connecting rod installation and action process: adjusting the graphite plug to be precisely matched with the flashboard hole of the launder before production; the liquid level is controlled by a manual control electric cylinder at the beginning of production, and the buoy is placed on the surface of the aluminum liquid in the front box after the primary liquid level is adjusted normally; after the angular displacement is adjusted, the control mode is changed into automatic control, the height of the displayed liquid level is automatically set and displayed on a screen, and if the liquid level is not proper, the set value can be corrected on the screen; the liquid level fluctuates up and down to drive the buoy to act, the acting distance is transmitted to a PLC control system by a laser ranging sensor to be calculated, a calculation program is edited in the PLC control system, and the action of the electric cylinder is controlled by output; the electric cylinder drives the graphite plug upwards to move upwards along with the electric cylinder, a gap between the launder flashboard and the graphite plug is controlled, and the outflow of the aluminum liquid is controlled so as to control the liquid level height of the aluminum liquid; the liquid level is fed back to a PLC control system by a laser ranging sensor (the data acquisition period of the PLC control system to the laser ranging sensor is millisecond), and the laser ranging sensor and an electric cylinder form a closed loop.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention perform multiple simple modifications, including each technical feature combined in any other suitable manner, these simple modifications and combinations should be regarded as the disclosed content of the present invention, and all belong to the protection scope of the present invention.
Claims (10)
1. The device for controlling the liquid level of the molten aluminum in the cast-rolling front box with high precision is characterized by comprising a laser ranging sensor (1), a buoy (2), a PLC (programmable logic controller) control system (3), a stepping motor (4) and an electric cylinder three-link rod (5), wherein the laser ranging sensor (1), the PLC control system (3), the stepping motor (4) and the electric cylinder three-link rod (5) are sequentially connected, and the buoy (2) is placed on the surface of the molten aluminum in the front box; the electric cylinder three-link rod (5) comprises an electric cylinder, three-link rods and a launder plugboard, wherein the middle part of the launder plugboard is provided with a graphite plug.
2. Device according to claim 1, characterized in that the float (2) is a spherical float or a vertical float.
3. The device according to claim 2, characterized in that the float (2) is a nano-float.
4. The device according to claim 1, characterized in that the PLC control system (3) comprises a memory which archives the level data.
5. Device according to claim 1, characterized in that the stepper motor (4) is a permanent magnet or hybrid stepper motor.
6. The device according to claim 1, characterized in that the electric cylinder is provided with a high-precision roll coating screw rod and a servo motor.
7. The apparatus of claim 6, wherein the servo motor is an ac servo motor.
8. The device of claim 1, wherein the trisbars are stainless steel trisbars.
9. The apparatus of claim 1, wherein the triple link is provided with bearings to prevent the triple link from jamming when rotating.
10. The device as claimed in claim 1, wherein the triple link is provided at its side with a spring and a positioning ring for fixing the bearing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021876136.6U CN213162986U (en) | 2020-09-01 | 2020-09-01 | High-precision device for controlling molten aluminum liquid level in cast-rolling front box |
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| CN202021876136.6U CN213162986U (en) | 2020-09-01 | 2020-09-01 | High-precision device for controlling molten aluminum liquid level in cast-rolling front box |
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| CN213162986U true CN213162986U (en) | 2021-05-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535520A (en) * | 2022-03-03 | 2022-05-27 | 洛阳万基铝钛合金新材料有限公司 | Method for adjusting roll gap of casting and rolling machine without stopping |
| CN114905036A (en) * | 2022-07-19 | 2022-08-16 | 北京航空航天大学 | A kind of anti-gravity casting pressure compensation automatic control system and control method |
-
2020
- 2020-09-01 CN CN202021876136.6U patent/CN213162986U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535520A (en) * | 2022-03-03 | 2022-05-27 | 洛阳万基铝钛合金新材料有限公司 | Method for adjusting roll gap of casting and rolling machine without stopping |
| CN114535520B (en) * | 2022-03-03 | 2024-05-03 | 洛阳万基铝钛合金新材料有限公司 | Method for adjusting roll gap of casting and rolling machine without stopping |
| CN114905036A (en) * | 2022-07-19 | 2022-08-16 | 北京航空航天大学 | A kind of anti-gravity casting pressure compensation automatic control system and control method |
| CN114905036B (en) * | 2022-07-19 | 2022-09-27 | 北京航空航天大学 | A kind of anti-gravity casting pressure compensation automatic control system and control method |
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